Revert "Add const to the finders method in MetaData.cpp"

This reverts commit 78fed171d9d62b25aa846d7373a7040e3fd2241e.

Conflicts:

	include/media/stagefright/MPEG4Writer.h

Change-Id: Ie6f497f67a473ad95b50bb949c1aa49e1804bac3
4 files changed